You can understand better how to organize topics in a DITA map by working with a
populated map. You should open the sample map called flowers.ditamap,
located in the samples/dita folder.
Open the file flowers.ditamap.
Select the topic reference Summer Flowers and press the Move Down button to change the order of the
topic references Summer Flowers and Autumn Flowers.
Make sure that Summer Flowers is selected and press the Demote button. This topic reference and all
the nested ones are moved as a unit inside the Autumn Flowers topic
Close the map without saving.